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' (No Mode.)

- G. S. GRIMSTON.

GAS BURNER APPARATUS.

Patented lVIar.'27,1883.

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UNITED STATES GEORGE SYLVESTER GRIMSTON, 0F BROCKLEY ROAD, BROCELEY, COUNTY y v OF KENT, ENGLAND.

, GASf-BURNER APPARATUS.

SPECIFICATION forming part of 'Letters Patent No. 974,592, dated March 27, 1883. Application filed September 25, 1889. (No model.) Patented in England February 24, 1882, No. 900.

To all -wkom vit may concern Be it known that I, GEORGE SYLVESTER GRJIMsToN, a subject of the Queen of Great Britain, residing at Brockley Road, Brockley, in the county of Kent, England, have invented certain new and useful Improvements in Gas Burner Apparatus, (for which I have received LettersPatent in Great Britain N o. 900, dated 24th February, 1882,) of which the following is a specification.

This invention has for its object improvements in gas-burner apparatus.

In gas-bnruer apparatus constructed according to this invention the flame is entirely incloscd, and all air passing to it to support combustion has to pass through a regeuerator kept heated by the products ot' combustion as they pass away. The tlame also may be directed downward,and then allowed to curl upward under the edge of a deilector, so that the flame may be at the bottom of thelamp, and consequently avoid any downward shadow. To effect this the gasl is supplied by a vertical supply-pipe to a metallic chamber, from the bottom of which descend a number of tubular jets, preferably ranged in a circle at a short distance apart one from the other. Descending from the bottom of the gas-chamberis also a metallic cylinder, which surrounds and is of larger diameter that the circle of gas-jets. The metallic cylinder is open at bottom and descends somewhat lower than the ends of the tubular gas-jets. The lower cud of the cylinder is surrounded by a glass basin, preferably so shaped that every part of it is, as near as may be, equidistant from the nearest point oi' the cylinder. The top ot' the glass vessel is secured to the lower end of an outer metallic cylinder, which surrounds the upper part ofthe cylinder before mentioned. Air tubes or passages are provided, leadin g from the outer cylinder to the inner one, to admit air to the interiorot the inner cylinder to support the combustion oi gas issuing from the burner. Between the air-inlet passages are spaces for the products ot' combustion to pass between on their way to a chimney. This chimney rises up from the top of the outer cylinder. The jets of gas issuing from the burner are projected downward, and when the burners have been lighted long enough to produce an upward draft in the chimney they curl upward around the lower end of the inner cylinder, between it and the outer glass, and the products of combustion, rising upward to the chimney, pass between the air-inlet tubes or passages, so that all the air passing to the burners gets highly heated, and as the dame is entirely inclosed the heating of the incoming air is carried to a very high degree. Preferably the 6o air-passages leading to the interior of the in ner cylinder are formed of numerous circular tubes radiating from it to the outer cylinder,

which carries the glass; but they might be otherwise formed to effect the saine object. If desired, the outer cylinder, which carries the glass, might be itself surrounded by another glass cylinder of larger diameter, and this glass cylinder might extend downward so as to surround the glass which incluses the burner. 7o In thisway the outer ends of the air-passages would be protected from currents of air blowing directly into them. The out-er cylinder, of glass, might also be closed at the top, so that all air passing to the burner would then have to ascend between the inner and outer glasses. ln this way the heating ot' the air passing to the burner would be stillfurther increased. ln place ofthe burner being set so that the flame is directed vertically downward, it might be Se y set so as to direct the dame horizontally.

In order that my invention may be fully uuderstcod and readily carried into effect, I have shown in the drawings hereunto annexed a gas-burner apparat-us constructed in the manner I prefer.

Figure l is a vertical section of the apparatus, and' Fig. 2 a horizontal section on the line l l in Fig. 1.

A is the gas-supply pipe, terminating at its gr lower end in a gas-chamber, A, from which descend a number of small tubes, B, ranged in a circle, as shown at Fig. 2.` C is the cylinder, of copper, attached at its upper end to the exterior of the gas-chamber A. The bott-om end of the cylinder is open, and is somewhat below the bottom of the tubes B D.

f D are copper tubes radiating out from the upper part of the cylinder G. Their outer ends pass through and are secured in a copper cylco nder, E.

F is a chimney which rises up from the top A A bell-shaped glass shade, H, may be carried from 'the top of the cylinder G, as shown, by three or more hinged pieces, I, which can be turned up into the position shown `bydotted lines to admit of the shade H being put in place or removed.

J is the glass bowl by which the lower end of the cylinder Eis closed. Ithas an outward iiange around its upper edge, which rests on an asbestus ring, K. The asbestus ring is oarried by a dan ge, L, which projects inward from a metallic ring, M. This ring just fits within the lower end of the cylinder E and can be locked to it in any suitable manner. In the drawings the cylinder E is, for this purpose, shownto have two or more pins, E', projecting inward from it, and the ring 'M has a corresponding number of L-shaped slots eut into it from its top edge. Vhen the ring M is pushed upward into the cylinder E the pins E are made to enter the vertical parts of the slots. A partial turn is then given to the ring, so that thepins shall enter the horizontal portions ofthe slots, and so hold the ring up.

N N are knobs or handles by which the ring M can be turned.

O is a guard composed ot' an open net-work of fine wire to serve as a guard to the glass basin J and keep it from being. accidentally broken. The bottom of the glass bowl is, as shown, formed with an inward central conical projection, so that approximately the bottom of the glass bowlJ shall at all parts be atequal distances from the nearest point of the cylinder O. By this conical projection the stream of heated air and gas issuing from the bottom of the cyl-l inder C, and urged forward by the draft of the chimney, is deiiected uniformly' outward to form an outwardly-spreadin g flame, which is confined in theV comparative narrow channel between the cylinder C and the bowl J. The sides of the bowl conduct the heated products of combustion upward and cause them to pass between theseveral tubes D, so that the products of combustion may give oif their heat to the incoming gas and air.

Having thus described the nature of my invention and the manner of performing the same, I would haveitnnderstood thatIclaini- 1. The combination of the cylinder C, downward through which air is caused to pass, the jets delivering gas within the cylinder at its lower end, and means against which l.the dame impinges, and by which it is deflected outwardl and upward in annular form around the lower end of the cylinder as it issues downwardly therefrom, substantially as and for the purpose hereinbefore set forth.

i., Thel combination of the cylinder C, from the lower end of which the dame issues, means for supplying air to the 'cylinder above said end, means for supplying gas in jets to and within the cylinder at the lower end, means against which the downwardlyissuing ame impin ges, and by which it is deiiected outward and upward, and means for confining and conducting the flame and products of combustion along the outside of the cylinder in passing off, substantially as and for the purpose hereinbe fore set forth.

3. The combination of the cylinder C, from` the lower end of which the dame issues, the radiating-tubes supplying air to the upper part ofthe cylinder, means for supplying gas in jets to the cylinder, means for deflecting the flame outwardand upward, and means for conducting thetlame and products ofcombustion along the outside of the cylinder and in contact with the air-su ppl y tubesin passing oft', substantially as and for the purpose hereinbefore set forth.

y* 4. The combination,with gas-burning apparatus in which gas is caused to issue downward to form an annular `flame, of a bowl, J, with a central conical projection coniinin g the flame within a channel, substantially as described.

5. The combination of the cylinder from oneend of which the iiame issues, means for conducting gas to the opposite end of said cylinder, the gas-'jet tubes discharging within the cylinder and near that end from which the flame issues, the flame-defleeting bowl,the cylinder E, and the air-supply tubes, substantially as and for the purpose setforth.

6. The combination of the cylinder C, its air-supply tubes,vthe gas-chamber, the tubes B, the bowl J, the 'cylinder E, the gas-supply pipe, and the chimney, substantially as and for the purpose set forth.

GEORGE srilvrs'r'rn. einnsron.

Witnesses:

J. WATT, W. J. NoRwooD, Both of 17 Gracechu'rch Street, London.

IOO 

